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<H1 class="no-header">define_key 3x</H1>
<PRE>
<STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>                                                  <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>




</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
       <STRONG>define_key</STRONG> - define a keycode


</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
       <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

       <STRONG>int</STRONG> <STRONG>define_key(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>definition</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>keycode</EM><STRONG>);</STRONG>


</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
       This  is an extension to the curses library.  It permits an application
       to define keycodes with their corresponding control  strings,  so  that
       the ncurses library will interpret them just as it would the predefined
       codes in the terminfo database.

       If the given string is null, any existing definition for the keycode is
       removed.   Similarly,  if  the  given  keycode is negative or zero, any
       existing string for the given definition is removed.


</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
       The keycode must  be  greater  than  zero,  and  the  string  non-null,
       otherwise  <STRONG>ERR</STRONG>  is  returned.   <STRONG>ERR</STRONG>  may  also  be returned if there is
       insufficient memory to allocate the data to store the  definition.   If
       no error is detected, <STRONG>OK</STRONG> is returned.


</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
       These  routines  are  specific  to ncurses.  They were not supported on
       Version 7, BSD or System V implementations.  It is recommended that any
       code depending on them be conditioned using NCURSES_VERSION.


</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
       <STRONG><A HREF="keyok.3x.html">keyok(3x)</A></STRONG>, <STRONG><A HREF="key_defined.3x.html">key_defined(3x)</A></STRONG>.


</PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
       Thomas Dickey.



                                                                <STRONG><A HREF="define_key.3x.html">define_key(3x)</A></STRONG>
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